Granted Patent
Utility
US 5,031,815 · App. 07/498,164
Button feeder for button applicator
Inventors:
Fumio Seki, Yasuhiro Kobayashi
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Feb 27, 1990
Inventors
Fumio Seki
Yasuhiro Kobayashi
Assignee (at issue)
Yoshida Kogyo K.K.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.